Everytime I did the math in my head, then clicked on the ball, it worked. Then when I just stared at a # w/o doing any math, it was wrong.
I've noticed that the symbols change numbers every time. What ever symbol is next to the #9, is what is going to come up in the crystal ball. Obviously it has more to do with the math. There are only a few possible totals, and the symbol that is next to the 9, is also next to the other possible answers.
Took me a whole 5 minutes to figure it out.
It's all multiples of 9.
Any answer you come up with will be 9, 18, 27, 36, 45, 54, 63, 72, 81.
Thank you, and have a nice day.